X-Windows

DESCRIPTION

X Window System servers run on computers with
bitmap displays. The server distributes user input to and accepts output
requests from various client programs through a variety of different interprocess
communication channels. Although the most common case is for the client
programs to be running on the same machine as the server, clients can be
run transparently from other machines (including machines with different
architectures and operating systems) as well.

X supports overlapping hierarchical subwindows and text
and graphics operations, on both monochrome and color displays. For a full
explanation of the functions that are available, see the Xlib -
CLanguageXInterface manual, the XWindowSystemProtocol specification,
the XToolkitIntrinsics -
CLanguageInterface
manual, and various toolkit documents.

The number of programs that use
X is quite large.
Programs provided in the core MIT distribution include: